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 www.compression-links.info: Find, download & compress! 
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| Benchmarks area, Lossless area, Video area, BenchmarksTests content, Lossless_Video_Codecs area |
The main goal of the performed comparison is getting answers on the following questions regarding lossless video codecs:
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| Benchmarks area, Lossless area, BenchmarksTests content | The contest is about compressing the human world knowledge as well as possible. The intention of this prize is to encourage development of intelligent compressors/programs. The goal is to compress the first 100MB of Wikipedia better than your predecessors. The total prize is about 50'000€. Created: 23/12/2006 by Maxim Smirnov |
| Benchmarks area, ImageCompression area, JPEG2000 area, BenchmarksTests content | WMPhoto is a new format for image compression that is said to have better quality/compression ratio than that of current standards, including JPEG 2000. The main goal of this testing was the verification of superiority of WMPhoto by comparing it against nine JPEG 2000 codecs from last year's JPEG 2000 Image Codecs Comparison. Created: 21/10/2006 by Dmitriy Vatolin |
| Benchmarks area, BenchmarksTests content | There exist various benchmarking-corpora for compressors in the internet, used by most of the researchers in the field of data-compression. But they mostly publish their results in the papers only. This makes it hard - for both: professionals and amateurs - to compare their results and verify effectivity against those of others, also because they are mostly not aware of their existance. So these are some reasons that lead to the creation of this centralized repository of results for any kind of compression over a broad range of well known and accepted as well as some experimental and personal corpora. Created: 04/10/2006 by Niels Fröhling |
| MPEG area, Benchmarks area, Video area, BenchmarksTests content |
The main task was to comparatively evaluate quality of MPEG-2 decoders while decoding distorted streams. This question is topical for satellite broadcasting and, to a lesser degree, for DVD video playback.
Tested decoders:
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| Benchmarks area, Video area, BenchmarksTests content |
The main quality parameter of codec is the subjective impressions of viewer during compressed video playback. So the main idea of subjective comparison methods is to evaluate visual quality of compressed sequences as the average opinion of experts (MOS, Mean Opinion Score).
During this comparison the following codecs were tested: Bitrates: Number of sequences: 4 Number of experts: 50 Created: 07/03/2006 by Dmitriy Vatolin |
| Benchmarks area, BenchmarksTests content, MPEG-4_AVC_H264 area | Comparison of 7 H.264 codecs with DivX6. All H.264 codecs were kindly provided by the codecs developers. # Total number of graphs in this comparison is 3796. Only 82 (2%) of them are in document; # The number of computer-days is more than 20; # Final document has 85 pages. Created: 20/12/2005 by Dmitriy Vatolin |
| Benchmarks area, ImageCompression area, Lossless area, Links content, BenchmarksTests content | A comprehensive set of tests on lossless data compression. Created: 10/06/2001 by Mark Nelson |
| Benchmarks area, ImageCompression area, NewsgroupPosts content | The comp.compression FAQ attempts to answer this for you. Created: 14/11/1999 by Mark Nelson |
| Benchmarks area, Video area, BenchmarksTests content | Comparison of more than 30 video codecs on several sequences and with different parameters (Fedruary 2003). Created: 18/07/2005 by Dmitriy Kulikov |
| Tutorials content, Benchmarks area, MPEG-4_AVC_H264 area | Comparison of 6 codecs with default parameters. Three of them were kindly provided by the codecs developers. Created: 18/07/2005 by Dmitriy Kulikov |
| MPEG area, Benchmarks area, BenchmarksTests content | The newest versions of MPEG-4 codecs comparison for their using by an ordinary user for home video compression. Also shown the evolution of the DivX codec. Created: 18/07/2005 by Dmitriy Kulikov |
| Benchmarks area, Files content | Comparing different image compression programs has always been difficult. As a suite of test images and a place for archiving results, the Waterloo BragZone hopes to overcome these problems. Central to the effort is the Waterloo Repertoire, a suite of 32 test images Created: 14/11/1999 by Mark Nelson |
| Benchmarks area, BenchmarksTests content, Lossless_Video_Codecs area | Comparison of 15 lossless codecs in RGB, YUV2, YV12. Created: 18/07/2005 by Dmitriy Kulikov |
| Benchmarks area, Archiving area, BenchmarksTests content | ACT - by Jeff Gilchrist. ACT is the Archive Comparison Test, a long running benchmark on well known archiving programs. Created: 02/06/2002 by Mark Nelson |
| Benchmarks area, Files content | A standard image database Created: 01/01/1970 by Mark Nelson |
| Benchmarks area, Lossless area, BenchmarksTests content |
Werner Bergmans has created a new benchmark site that aims to show the best compression ratios possible for multiple file types, including English text, executables, graphics, and so on. Werner says he is running these tests with 80-100 programs for each file type!
Reader Werner B. says Useful site to compare results of different compression programs. Regularly updated. Created: 28/02/2004 by Mark Nelson |
| Benchmarks area, Lossless area, BenchmarksTests content |
Comparisions of over 230 archivers, in handy Excel format, from Berto.
Reader Emiliano C. said "Wonderful! Great! Wonderful! Cool!" Created: 10/09/2003 by Mark Nelson |
| Benchmarks area, Files content | Sebastian Deorowicz decided to create a compression corpus of his own, attempting to overcome some of the deficiencies he sees in the old guard. Created: 23/06/2003 by Mark Nelson |
| Benchmarks area, Links content, Files content | David Cary is a major link farmer. One of the sections of his massive Data Compression page has links to various images and files that are used in various benchmarks. Created: 01/05/2003 by Mark Nelson |
| Benchmarks area, People content | This is Jeff Gilchrist's home page. Jeff is the curator of the Archive Compression Test, which presumably keeps him busy. Created: 25/06/2001 by Mark Nelson |
| Benchmarks area, Esoterica area, SourceCode content, Papers content |
A couple of programs using neural networks for compression, along with a couple of papers by the author. This area of data compression is definitely underserved, check out what's here and see if neural networks deserve more attention than they are getting.
Update: This page appears to now have some links to general lossless benchmarking info. Created: 17/07/2000 by Mark Nelson |
| Benchmarks area, Swedish language, Files content | A huge collection of Swedish language text files Created: 13/11/1999 by Mark Nelson |
| Benchmarks area, Files content | This is the home page for the Canterbury Corpus, a test suite designed to provide a standard set of files for lossless compressoion testing. You will find links to the actual files in the test suite, as well as papers and test results. Created: 21/09/1999 by Mark Nelson |
| Benchmarks area, Files content | The British National Corpus (BNC) is a 100 million word collection of samples of written and spoken language from a wide range of sources, designed to represent a wide cross-section of current British English, both spoken and written. Created: 21/09/1999 by Mark Nelson |
| Benchmarks area, Papers content | This is the home page for the Calgary Corpus. This set of files has long been the standard used for comparison of various lossless compression techniques. Created: 21/09/1999 by Mark Nelson |
| Benchmarks area, BenchmarksTests content | A set of benchmarks for lossless compression of various test sets, including the CCITT B&W images, the Calgary Corpus, and a Gray Scale set. Includes some dates for checking historical progression. Created: 24/12/1998 by Mark Nelson |
| Benchmarks area, Papers content | Leonid A. Broukhis puts his money where his mouth is by offering a cash prize for good, reproducible compression. He has paid out at least one modest prize. Created: 23/12/1998 by Mark Nelson |
| Benchmarks area, BenchmarksTests content | A set of test results for files run against the Calgary Corpus. This set of test results are kept on the Canterbury web site so that they can be easily referenced for comparison purposes. Created: 12/12/1998 by Mark Nelson |
| Benchmarks area, DataFiles content | The Calgary Corpus is a set of files that were put together by compression mavens Bell, Cleary, and Witten in 1989 for benchmarking lossless compression algorithms. Files included in this set include English text, source code, executable code, and some data files. Created: 08/12/1998 by Mark Nelson |
